/* roulang page: index */
:root {
      --bg-base: #070B14;
      --bg-surface: #0D1322;
      --border-glass: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(56, 189, 248, 0.4);
      --text-main: #F8FAFC;
      --text-sub: #94A3B8;
      --text-muted: #64748B;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-glass);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      border-color: var(--border-hover);
      box-shadow: 0 10px 30px -10px rgba(14, 165, 233, 0.3);
      transform: translateY(-2px);
    }
    .btn-gradient {
      background: linear-gradient(135deg, #0284C7 0%, #0EA5E9 100%);
      box-shadow: 0 0 20px rgba(14, 165, 233, 0.45);
      transition: all 0.25s ease;
    }
    .btn-gradient:hover {
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.65);
      transform: translateY(-1px);
    }
    .badge-tech {
      background: rgba(14, 165, 233, 0.12);
      border: 1px solid rgba(56, 189, 248, 0.28);
      color: #38BDF8;
    }